Paradigm Monitor SE Atom vs KEF Q100

Short answer: the Paradigm Monitor SE Atom for easier EQ, the KEF Q100 for point-source imaging. The Q100’s 5.25” Uni-Q coaxial driver keeps tweeter and woofer aligned, but its spinorama shows broad lifts from 700Hz-1.5kHz and again from 5kHz up, plus a cancellation notch around 1.4kHz from port and cabinet interaction. The Atom counters with more consistent directivity, and its own 2-4kHz dip and 15kHz resonance to correct.

Buy the Paradigm Monitor SE Atom. It is rated higher for sound quality, and the KEF Q100 is discontinued, so it is only available used.

Looking for alternatives? See the complete Passive Home rankings.

Specifications Side By Side

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The Two Speakers In Full

Paradigm Monitor SE Atom: $399.98 per pair Paradigm eBay

Pros: Good, consistent directivity across the on-axis, listening-window, and off-axis curves makes the Atom easier to equalize and less room-dependent than many budget speakers. Bass tuning is well judged, letting the woofer play loud on demanding tracks without bottoming out even without a subwoofer. Paradigm’s NRC research pedigree shows in the horizontal and vertical dispersion measurements. Measured bass extension of 58.6Hz (-3dB), with a measured sensitivity of 85dB.

Cons: On-axis response is uneven out of the box, with a 2-4kHz dip followed by a peak and a resonance around 15kHz that the reviewer said gives it a bright, “showroom” voicing without EQ correction. There’s no meaningful bass extension for full-range use, so a subwoofer is effectively required for anything beyond desktop or near-field listening.

Full Paradigm Monitor SE Atom review and specifications →

Bass Extension (-10dB)	49.8Hz (derived, log-interpolated between spinorama.org -9dB/-12dB points)
Bass Extension (-3dB)	58.6Hz (measured, Audio Science Review)
DIY Kit	No
Dimensions	12.75H x 7.125W x 11D in
Drivers	1” X-PAL aluminum dome tweeter (ferrofluid, PPA lens), 5.5” mineral-filled polypropylene mid/bass
Frequency Response	61Hz - 21kHz +/-3dB (Manufacturer specified)
Impedance	8 ohms
Power Handling	15-100W recommended
Sensitivity	85dB (2.83V/1m, measured, Audio Science Review)
Spinorama Preference Score	4.13
Spinorama Preference Score with Perfect Sub	6.50
Weight	11.9 lbs (5.4 kg) each
Woofer Cabinet	ported, rear

• Links
  • Official Paradigm Monitor SE Atom Product Page
• Reviews, Comparisons and Sound Samples
  • Audio Science Review Measurements More from Audio Science Review →
  • Audio Science Review Measurements (spinorama.org)
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KEF Q100: $550 per pair Discontinued eBay

Newer model: the KEF Q1 Meta, ranked higher, rated 3.6/5.

Pros: 5.25” Uni-Q coaxial driver keeps the tweeter and woofer point-source aligned for consistent imaging. 86dB sensitivity is reasonably easy to drive. Measured bass extension of 85Hz (-3dB), with a measured sensitivity of 85dB.

Cons: CEA2034 spinorama shows broad, audible deviations from flat rather than narrow peaks: a lift from 700Hz-1.5kHz and again from 5kHz up, plus a cancellation notch around 1.4kHz from port/cabinet interaction. Bass sensitivity drops to about 80dB and impedance falls below 4 ohms in the bass, demanding a capable amplifier. The reviewer heard boomy, buzzing bass that improved somewhat with the port plugged, and could not recommend it, calling the famous reputation more about looks than sound. Discontinued.

Full KEF Q100 review and specifications →

Bass Extension (-10dB)	65Hz (measured, Audio Science Review)
Bass Extension (-3dB)	85Hz (measured, Audio Science Review)
DIY Kit	No
Dimensions	11.8”H x 7.1”W x 10.7”D (300 x 180 x 272 mm)
Drivers	5.25” Uni-Q aluminum coaxial driver, 1” aluminum dome tweeter
Frequency Response	49Hz - 40kHz (+/-3dB) (Manufacturer specified)
Impedance	8 ohms nominal
Sensitivity	85dB (2.83V/1m, measured, Audio Science Review)
Spinorama Preference Score	4.96 (spinorama.org)
Spinorama Preference Score with Perfect Sub	7.24 (spinorama.org)
Weight	13 lbs (5.9 kg) each
Woofer Cabinet	ported, rear

• Reviews, Comparisons and Sound Samples
  • Audio Science Review Measurements More from Audio Science Review →
  • Audio Science Review Measurements (spinorama.org)
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